package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * ClassName: OrderServiceImpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Author 那啥啥
 * @Create 2024/3/19  15:24
 * @Version 1.0
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;
    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

        //处理业务异常（地址为空，购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
//        checkOutOfRange(addressBook.getProvinceName()+addressBook.getCityName()+
//                addressBook.getDistrictName()+addressBook.getDetail());
        //购物车数据
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.list(shoppingCart);
        if(shoppingCarts == null || shoppingCarts.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //订单表一条
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setAddress(addressToString(addressBook));

        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.PAID);
        orders.setStatus(Orders.TO_BE_CONFIRMED);//先设置为代接单用于测试
        orders.setNumber(BaseContext.getCurrentId() + String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(BaseContext.getCurrentId());

        orderMapper.insert(orders);
        //订单明细表多条

        List<OrderDetail> orderDetails = new ArrayList<>();
        for (ShoppingCart cart : shoppingCarts) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);//商品拷贝
            orderDetail.setOrderId(orders.getId());//设置订单明细关联的订单
            orderDetails.add(orderDetail);
        }
        //批量插入明细
        orderDetailMapper.insertBatch(orderDetails);

        //清空购物车数据
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
        //封装vo返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        Map map  = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号" + orders.getId() );
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        return orderSubmitVO;
    }


    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端浏览器推送消息 type orderid content
        Map map  = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号" + outTradeNo);
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 查询历史订单
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult pageHistoryOrders(int page, int pageSize, Integer status) {
        PageHelper.startPage(page,pageSize);
        //准备查询的实体条件
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        //分页查询
        Page<Orders> page0 = orderMapper.pageQuery(ordersPageQueryDTO);
        List<Orders> page1 = page0.getResult();
        ArrayList<OrderVO> list = new ArrayList<>();

        //将数据装入list
        if(page1.size() >0 && page1 != null){
            for (Orders orders : page1) {
                Long id = orders.getId();
                //查询订单详情
               List<OrderDetail> orderDetails =  orderDetailMapper.getByOrderId(id);

               //封装Vo并放入list
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);

            }
        }

        return new PageResult(page0.getTotal(),list);
    }

    /**
     * 根据id查询详情
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        List<OrderDetail> list = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        orderVO.setOrderDetailList(list);
        Orders orders = orderMapper.getById(id);
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDishes(getOrderDishesStr(orders));
        return orderVO;
    }

    /**
     * 取消订单
     * @param id
     * @throws Exception
     */
    @Override
    public void userCancelById(Long id) throws Exception {
        //查询订单
        Orders orders = orderMapper.getById(id);

        if(orders == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //状态大于二不可取消
        if(orders.getStatus() > 2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //等于二需要退款
        Orders orders1 = new Orders();
        orders1.setId(orders.getId());

        if(orders.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            weChatPayUtil.refund(
                    orders.getNumber(),
                    orders.getNumber(),
                    new BigDecimal(0.01),//退价
                    new BigDecimal(0.01)//原价
            );
            orders1.setPayStatus(Orders.REFUND);
        }

        //更新订单状态，取消原因，取消状态
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    /**
     * 再来一单
     * @param id
     */
    @Override
    public void repetition(Long id) {
        //查询当前userId
        Long userId = BaseContext.getCurrentId();

        //查询当前details
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //details转换为购物车
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(orderDetail -> {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());

        //将购物车内批量插入
        shoppingCartMapper.insertBatch(shoppingCartList);

        //购物车对象加入数据库

    }
    /**
     * 管理端条件分页查询
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {

        //获取pagenum 和pagesize开始分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        //分页查询
        Page<Orders> orders = orderMapper.pageQuery(ordersPageQueryDTO);
        //将orders转换为vo
        List<OrderVO> ordersVoList = getOrdersVoList(orders);
        return new PageResult(orders.getTotal(),ordersVoList);

    }

    /**
     * 状态订单统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer tobe = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer over1 = orderMapper.countStatus(Orders.CONFIRMED);
        Integer dip = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        //封装到vo
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(over1);
        orderStatisticsVO.setToBeConfirmed(tobe);
        orderStatisticsVO.setDeliveryInProgress(dip);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {

        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception{

        //查询订单
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());
        //订单状态2才能
        if(orders == null || !orders.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //已支付要退款支付状态为
        Integer payStatus = orders.getPayStatus();
        if(payStatus ==  Orders.PAID){
            //用户已支付请退款
            String refund  = weChatPayUtil.refund(
                    orders.getNumber(),
                    orders.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01)
            );

            log.info("申请退款 {}",refund);
        }
//更新状态
        Orders orders1 = new Orders();
        orders1.setId(orders.getId());
        orders1.setStatus(Orders.CANCELLED);
        orders1.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders1.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders1);
    }
    /**
     * 取消订单
     *
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 派送订单
     *
     * @param id
     */
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }


    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 客户催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null ) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type",2);//1，订单提醒，2客户催单
        map.put("orderId",id);
        map.put("content","订单号"+ ordersDB.getNumber());
        String js = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(js);
    }

    //将orders转换为vo方法
    private List<OrderVO> getOrdersVoList(Page<Orders> pages){
        ArrayList<OrderVO> list = new ArrayList<>();
        List<Orders> orders = pages.getResult();

        if(!CollectionUtils.isEmpty(orders)){
            for (Orders order : orders) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order,orderVO);
                //添加新属性
                orderVO.setOrderDishes(getOrderDishesStr(order));

                list.add(orderVO);

            }
        }
return list;
        
    }


    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    //地址转化
    private String addressToString(AddressBook addressBook){
        return addressBook.getProvinceName()+" "+addressBook.getCityName()+" "+addressBook.getDistrictName()
                +" "+addressBook.getDetail();
    }



    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
